fix missing spans for express built-in middleware #627
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vinvol
approved these changes
Jul 16, 2019
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What does this PR do?
Fix missing spans for built-in Express middleware. By wrapping
app.handleinstead of adding a middleware, it ensures that it's not possible that a middleware already ran by the time our middleware is reached.Motivation
Since the plugin was itself using a middleware to hook into Express, built-in middleware that run earlier in the request would not be instrumented, thus hiding some timings.